Gruul Guildmage is a uncommon Creature — Human Shaman card from Guildpact (GPT), collector number 144. Current market price: $0.11 (foil $0.50), TCGplayer market prices via Scryfall.
({R/G} can be paid with either {R} or {G}.) {3}{R}, Sacrifice a land: This creature deals 2 damage to target player or planeswalker. {3}{G}: Target creature gets +2/+2 until end of turn.